/* SEM FIO — Calculadora de Perda no WhatsApp
   Visual sóbrio, sem cafonice. Inspiração zaia.app + Constituição 8.1 (Utilidade > Espetáculo).
   Cores da Comunica SEM FIO: grafite + azul-petróleo + acento quente. */

:root {
  --bg: #fafaf7;
  --bg-card: #ffffff;
  --ink: #1a1f24;
  --ink-mid: #4a5560;
  --ink-soft: #7a8693;
  --line: #e5e8eb;
  --line-soft: #f0f2f4;
  --brand: #0a5a9c;
  --brand-mid: #084577;
  --brand-soft: #e6f0f8;
  --accent: #aed81e;
  --accent-mid: #9bc91f;
  --accent-soft: #f3fad7;
  --danger: #b14a3a;
  --ok: #2d6b4e;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(14, 59, 67, 0.05);
  --max: 720px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

a { color: var(--brand-mid); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--brand-mid); }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 2px; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-card);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo-svg { height: 36px; width: auto; display: block; flex-shrink: 0; }
.logo-svg text { font-family: 'Bebas Neue', 'Anton', 'Arial Narrow', Impact, sans-serif; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 14px; color: var(--ink); }
.brand-tag { font-size: 11px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.6px; }
.topbar-link { font-size: 13px; color: var(--brand-mid); font-weight: 500; }

/* Container */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

/* Hero */
.hero { margin-bottom: 32px; }
.eyebrow {
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1.2px;
  color: var(--brand-mid); margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 16px; color: var(--ink);
}
.hero .lead { font-size: 17px; color: var(--ink-mid); max-width: 560px; margin: 0; }

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 28px;
  margin: 0 0 24px;
  box-shadow: var(--shadow);
}
.card h2 {
  font-size: 20px; font-weight: 600; margin: 0 0 8px; color: var(--ink);
}
.card h3 {
  font-size: 16px; font-weight: 600; margin: 0 0 8px; color: var(--ink);
}
.hint { font-size: 14px; color: var(--ink-soft); margin: 0 0 20px; }

/* Form */
.form .field { margin-bottom: 18px; }
.form label {
  display: block; font-size: 14px; font-weight: 600; color: var(--ink);
  margin-bottom: 6px;
}
.form input {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 16px; color: var(--ink); background: #fff;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form input:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.form input:invalid:not(:placeholder-shown) {
  border-color: var(--danger);
}
.form .help {
  display: block; font-size: 12px; color: var(--ink-soft);
  margin-top: 4px; line-height: 1.4;
}
.form .erro {
  font-size: 14px; color: var(--danger);
  margin: 12px 0 0; min-height: 1em;
}

/* Buttons */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--brand); color: #fff;
  padding: 14px 24px;
  border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
}
.btn-primary:hover { background: var(--brand-mid); border-bottom: none; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.form .btn-primary { width: 100%; margin-top: 8px; }

/* Resultado */
.resultado { background: var(--brand-soft); border-color: #c8d8da; }
.resultado-lead { font-size: 15px; color: var(--ink-mid); margin: 0 0 24px; }
.cenarios {
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
  margin-bottom: 24px;
}
@media (min-width: 600px) {
  .cenarios { grid-template-columns: 1fr 1fr 1fr; }
}
.cenario {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
}
.cenario h3 {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px;
  color: var(--ink-mid); margin: 0 0 10px;
}
.cenario-tag {
  font-size: 10px; font-weight: 700; letter-spacing: 0.5px;
  background: var(--accent); color: #fff;
  padding: 2px 6px; border-radius: 3px; text-transform: none;
}
.cenario-valor {
  font-size: 24px; font-weight: 700; color: var(--brand);
  margin: 0 0 6px; letter-spacing: -0.01em;
}
.cenario-desc { font-size: 12px; color: var(--ink-soft); margin: 0; line-height: 1.4; }
.cenario--moderado { border-color: var(--brand); border-width: 2px; }
.cenario--pessimista { background: var(--accent-soft); border-color: #e8c4b8; }
.cenario--pessimista .cenario-valor { color: var(--accent); }

.destaque {
  background: var(--bg-card);
  border-left: 4px solid var(--brand);
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
}
.destaque p { margin: 0; font-size: 15px; color: var(--ink); }
.destaque strong { color: var(--brand); }

.recomendacoes { margin-bottom: 24px; }
.recomendacoes h3 { margin-bottom: 12px; }
.recomendacoes ol { margin: 0; padding-left: 20px; }
.recomendacoes li { margin-bottom: 8px; font-size: 15px; color: var(--ink-mid); }
.recomendacoes li strong { color: var(--ink); }

.cta {
  background: var(--brand);
  color: #fff;
  padding: 24px 24px;
  border-radius: var(--radius);
  text-align: center;
}
.cta p { margin: 0 0 14px; font-size: 15px; }
.cta .btn-primary {
  background: #fff; color: var(--brand);
}
.cta .btn-primary:hover { background: var(--bg); }

/* Como funciona */
.como-funciona p, .como-funciona li { font-size: 15px; color: var(--ink-mid); }
.como-funciona ul { padding-left: 20px; }
.como-funciona li { margin-bottom: 6px; }
.como-funciona li strong { color: var(--ink); }
.disclaimer {
  font-size: 13px; color: var(--ink-soft);
  background: #fff8eb; border-left: 3px solid #d4a857;
  padding: 12px 14px; border-radius: var(--radius-sm);
  margin-top: 16px;
}

/* Outros apps */
.app-list { list-style: none; padding: 0; margin: 0 0 16px; }
.app-list-item {
  padding: 12px 14px;
  background: var(--line-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  display: flex; flex-direction: column; gap: 2px;
}
.app-list-item strong { font-size: 14px; color: var(--ink); }
.app-list-item span { font-size: 13px; color: var(--ink-soft); }
.app-list-item--em-breve {
  opacity: 0.75;
  border-left: 3px solid var(--ink-soft);
}
.cta-secundario { font-size: 14px; margin: 16px 0 0; }
.cta-secundario a { font-weight: 600; }

/* Rodapé */
.rodape {
  border-top: 1px solid var(--line);
  background: var(--bg-card);
  padding: 32px 24px;
  margin-top: 48px;
}
.rodape-inner {
  max-width: var(--max); margin: 0 auto;
  display: grid; gap: 20px;
  grid-template-columns: 1fr;
  font-size: 13px;
}
@media (min-width: 600px) {
  .rodape-inner { grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
}
.rodape strong { display: block; color: var(--ink); margin-bottom: 4px; }
.rodape p { margin: 0; color: var(--ink-soft); line-height: 1.5; }
.rodape-links { display: flex; flex-direction: column; gap: 4px; }
.rodape-links a { color: var(--ink-mid); }
.rodape-meta p { margin: 0 0 4px; }
@media (max-width: 640px) {
  .container { padding: 32px 16px 48px; }
  .card { padding: 20px 18px; }
  .topbar { padding: 12px 16px; }
  .topbar-link { display: none; }
}